7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 Sketch Coloring Page

7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 Template

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tomski7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3v和06a 1根据 coloring

7．如图4所示开关闭合后灯泡�光电压表和电流表分别测出了灯泡两端的电压和通过的电流并且两表的示数分别不超过3V和06A 1根据 sketch template

在图4所示的电路中电源两端的电压为6V并保持不变R1R2为两个相同阻值的电阻开关S1闭合后下列说法中正确的是 sketch template

如图甲所示电路中电源电压为5V闭合开关S后电压表的示数如图乙所示则L2两端的电压为 A．5VB．85VC．17VD．33V sketch template

题目如图甲乙所示的两个电路若将甲中的灯泡L2拧掉闭合开关你将看到灯泡L1 �光/不�光若在图甲中把一根导线接在灯泡L2的两端 sketch template

如图所示的电路中闭合开关时下列说法正确的是 A．两灯泡串联 B．电流表测的是总电流 C．电流表测得是L1电流 D．开关只能控制L2 sketch template

如图所示当开关S闭合后电压表V1 的示数为12V电压表V2的示数为4V那么灯L1两端的电压是 A．12V B．4V C．8VD sketch template

如图a所示电路中当闭合开关后两个电压表指针偏转均为图b中所示则灯L2两端的电压为1212伏．一段时间后灯L2的灯丝突然烧断 sketch template

小明用一节干电池和一个灯泡连接了如图所示的电路用来探究铅笔芯AB的导电性．闭合开关后�现灯泡能�光这说明铅笔芯是导体导体当导线夹�左移动 sketch template

题目如右图所示家庭电路中当开关S闭合后灯泡L不亮用试电笔测试cd两点时氖管都�光测试ab两点时只有a点氖管�光则故障可能 sketch template

如图2所示的电路中电源电压不变开关闭合后若�动变阻器的�片P�右端移动则 A电压表的示数和电流表的示数都增大 B电压表的示数和电流 sketch template

11．如图7所示当开关S闭合后电压表V2示数为10V电压表V1示数为8V若电源电压为15V则灯气两端电压为 A 2V B sketch template

如图a所示电路中当闭合开关后 两只电压表的指针偏转均如图b所示 则电阻R1和R2两端的电压分别为（）出卷� sketch template

请用笔画线代替导线完成如图所示电路的连接要求满足闭合开关后�右移动�动变阻器�片的过程中1小灯泡变亮电压表的示数变小电压表有示数 sketch template

如图4所示当开关S闭合时灯L1L2均不亮某同学用一根导线探究其故障当把导线并接在灯L1两端时�现灯L2亮灯L1不亮当把导线并接在 sketch template

如图1甲所示的电路闭合开关后两灯都能�光并且两块电压表的指针所指的位置如图1乙所示则L1两端的电压是 VL2两端的电压是 V 图1 sketch template

如图所示当两个开关都闭合后两盏灯都能�光的电路是 A．B．C．D．——青夏教育精英家教�—— sketch template

如图所示电路开关S1闭合后S2的断开与闭合使电流表A2的两次示数之比为35由此可知R1与R2的阻值之比为23S2断开再闭合的过程 sketch template

题目如图4所示的四个实验操作中正确的是 A 调节天平使横梁平衡B 熄灭酒精灯C 测量水的温度D 测量木块边长题目和参考答案 sketch template

题目如图甲所示电路中电源电压可调定值电阻R1的阻值为10ΩR2为标有“100Ω 1A 的�动变阻器灯泡L的规格为“6V 3W 且 sketch template

如图所示电路开关S闭合后四个灯泡都正常�光某时刻t因灯丝烧断而突然熄灭假设其它三灯丝都没烧断则 AL2变暗L3更亮L1不变 sketch template

7．如图1所示闭合开关将�动变阻器的�片�上�动时下列说法正确的是 A．灯泡变亮 B．电压表的示数变大 C．电压表的示数不变 sketch template

6．图2所示的电路中当闭合开关S后电压表的示数 表示 A．L1两端的电压 B．L2两端的电压 C．电源电压 D．L2和电源电压——青 sketch template

如图所示的电路中，电源电压保持不变。闭合开关S后，�片P从b端移动到a端的过程，电压表示数U与电流表示数I的关系图像如图所示。下列说法正确的是（ sketch template

一轮复习：描绘小灯泡伏安特性曲线知乎 sketch template

如图所示电路中AB是两个完全相同的灯泡L为自感系数很大的线圈其直流电阻小于灯泡电阻．C是电容器闭合开关电路稳定时B灯恰能正常�光 sketch template

如图所示电源电压保持不变闭合开关S1S2电压表示数为6V电流表示数为06A断开S2后电压表示数变为2V则R2的电阻和电源电压 sketch template

题目如图所示的电路电源电压恒为6VL1标有“6V 72W 的字样L2标有“6V 36W 的字样忽略温度对灯丝电阻的影响下列 sketch template

7．如图5电源电压不变闭合开关�动变阻器的�片�右移动下列判断不正确的是 A．灯泡变亮 B．电压表的示数不变C．电流表A1的示数不变 D sketch template

如图所示电路中闭合开关S将�动变阻器的�片P由a端�到b端的过程中A电流表的示数逐渐减小B电压表的示数逐渐增大C小灯泡的亮度越来越暗 sketch template

百度教育 sketch template

如图7 所示电源电压恒定小灯泡L标有“3V 06W 字样R为定值电阻闭合S断开S1小灯泡正常�光若再闭合S1�现电流表示数 sketch template

如图所示电源电压不变当开关S1S2同时闭合时电流表的示数是03A电压表示数是6V．若两表互换位置当开关S2闭合S1断开时电流 sketch template

如图所示的电路中闭合开关时�现灯泡L1L2均不亮电流表指针几乎没有偏转．某同学用一根导线去找电路故障他将开关闭合然后将导线并接在 sketch template

13．如图4所示电源电压和灯泡电阻都保持不变当�动变阻器的�片P由中点�右移动时下列判断不正确的是 A．电流表和电压表的示数都增大 B sketch template

7．如图所示电路闭合开关S小灯炮不亮电流表无示数若用电压表测量�现AB两端和DC两端均无电压AD两端和BC两端电压均为8伏 sketch template

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